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(First upload on February 10 2009. Last on August 15 2021) [ 日本語 | English ]

Robinia pseudoacacia L.






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Robinia L. (ハリエンジュ)
Harienju (ハリエンジュ, 針槐), black locust
Nise-akashia (ニセアカシア/アカシア/イヌアカシア)
Lifeform: deciduous tall tree
Distribution: native to the North America (exotic to Japan, introduced in 1873)

Biologically invasive species in Japan

Habitat: various (often use for slope protection), as a pioneer

Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)
HUSTEP: Plants and Plant communities in Japan (flora list)

Nitrogen-fixing plant
f. inermis (Mirb.) Rehd. (トゲナシニセアカシア), no spines
索引

Robinia pseudoacacia in Hokkaido


ST1 ST2 ST3
ST4 ST5 ST6
[1] in the campus of Hokkaido University on July 14 2007. [2/3] a street tree at N24/W2, North Ward, Sapporo, on July 3 2010 (bark). [4] near a fumarole in the Nishiyama Craters on Mount Usu on May 26 2021. [5] nearby a tennis court in the Hokkaido University campus on November 12 2019. [6] seedlings and sproutings in a open land in N27/E3, East Ward, Sapporo, on August 3 2021.

Morphology


Shoot

A shoot with an inflorescencde skected on June 15 1983.
Sketch

Flower

Flower structrue:

Papilionaceous corolla, and diadelphous stamens (9 + 1)

Sketch
Petals
Petals
Floral diagram
Diagram
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